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Re: [patch] Removal of finite empty loops

From: Richard Henderson <rth at redhat dot com>
To: Zdenek Dvorak <rakdver at atrey dot karlin dot mff dot cuni dot cz>
Cc: gcc-patches at gcc dot gnu dot org
Date: Fri, 16 Jul 2004 17:09:50 -0700
Subject: Re: [patch] Removal of finite empty loops
References: <20040716221146.GA3214@atrey.karlin.mff.cuni.cz> <20040716231850.GA29133@redhat.com> <20040716232825.GA11343@atrey.karlin.mff.cuni.cz>

On Sat, Jul 17, 2004 at 01:28:25AM +0200, Zdenek Dvorak wrote:
> hardly.  The loop pass is quite far from cd_dce and keeping such flag
> through cfg cleanups would be a hell.

We don't permute the cfg randomly.  You've already shown that
the loop does not terminate; what sorts of changes do you think
may cause the edge to get removed out from under you?

r~

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References:
- [patch] Removal of finite empty loops
  - From: Zdenek Dvorak
- Re: [patch] Removal of finite empty loops
  - From: Richard Henderson
- Re: [patch] Removal of finite empty loops
  - From: Zdenek Dvorak

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